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STI ATV Tires from Rocky Mountain ATV/MC

STI is dedicated to the design, development and manufacturing of high quality ATV and UTV tires. Their engineers are committed to developing tires that meet the highest standards and provide the greatest value to their customers. Rocky Mountain ATV/MC has many kinds of STI ATV tires, made for sand, snow, mud, tracks and trails. You can be sure any tire that Rocky Mountain ATV/MC sells is durable and built to last, but we also strive to provide incredible prices as well.

If you need two STI ATV tires, make sure you check out our ATV Tire and Wheel Builder Package which can save you up to 56%. Simply choose two tires and wheels using our filters search that will find the tires to fit your machine perfectly. Then our trained professionals will mount them for free and get them ready to be shipped along with the free valve stems you receive with your package. In addition, you also receive free ground shipping with any ATV Tire and Wheel Package.

Latest STI ATV Tires Reviews – You could win up to $500 for reviewing products!

  • STI Roctane XD Radial ATV Tire

    STI Roctane XD Radial ATV Tire

    Matt in CO

    Great tires!!!!

    A little on the heavy side but they are a great rock tire and still fun on the faster trails. Can't beat how mean they look just sitting there.

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  • STI Tech 4 XC ATV Tire

    STI Tech 4 XC ATV Tire

    Richard in PA

    Great value, great product

    Very cheap tire compared to what else is out there. Is also a very good tire. Was ridden in very rocky terrain without any issues. Great traction for hill climbs.

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  • STI Outback AT ATV Tire

    STI Outback AT ATV Tire

    Josh in UT

    STI Outback AT's

    25X8-12 Frnt 25X10-12 Rear These are nice looking and performing tires they grip really well in all conditions but they do run small especially the rear width! And they offer no rim protection at the bead.

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  • STI Outback Max ATV Tire

    STI Outback Max ATV Tire

    BRIAN in LA

    great mud tire

    Very smooth on hard surfaces and a great mud tire

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  • STI Black Diamond ATR Radial ATV Tire

    STI Black Diamond ATR Radial ATV Tire

    Austin in MO

    Very Happy With These

    I am quite happy with these tires. You can't beat them for the price. You won't find a 6 ply radial for 60 dollars anywhere else. They have good all around traction. Not great in deep mud, but it's not a mud terrain tire either.

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  • STI Black Diamond XTR Radial ATV Tire

    STI Black Diamond XTR Radial ATV Tire

    robert

    confused about sizing

    The first thing is that my tires came in very fast. But when it came to selecting a tire, the more i read the more questions i had.I do not have any miles on these STI Black Diamond XTR tires ( 27x9x12 & 27x11x12) yet but they look good and i wanted to give everyone a idea on the sizing/weights.I had Bighorn 2.0 ( 26x9x12 & 26x11x12) with 500 miles on them and plugs in the sidewall. The tread depth on all 4 bighorns were 5/8".The tread depth on the STI are 1" not the 1 1/8" as stated. All 8 tires had 10 PSI in them for these measurements. The rear tires are the excat same diameter even with the tread depth difference. The front STI is 1/4" taller on total diameter. Also both of rear wheels weighed 39 lbs.The front STI was 36lbs and the 2.0 30lbs. The 2.0's with a steel wheels and the STI with a aftermarket aluminum. I guess this means these 27" STI's are actaually smaller than the 26" 2.0's not counting tread depth? Glad i went with 27's. Hope this helps someone.

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